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SDP extensions for setting up circuit-switched audio and video streams

SDP extensions for setting up circuit-switched audio and video streams. http://tools.ietf.org/html/draft-ietf-mmusic-sdp-cs-06 Simo Veikkolainen IETF80 Apr 1 st , 2011. Open issues. Handling “-” in offer/answer procedure

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SDP extensions for setting up circuit-switched audio and video streams

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  1. SDP extensions for setting up circuit-switched audio and video streams http://tools.ietf.org/html/draft-ietf-mmusic-sdp-cs-06 Simo Veikkolainen IETF80 Apr 1st, 2011

  2. Open issues • Handling “-” in offer/answer procedure • Media format may be omitted (endpoints may not be aware of the codecs used on the CS bearer) • Proposal: need to explicitly define endpoint behavior (“-” means “don’t care”?) • Discriminator byte in User-User Information Element • UUIE has a discriminator byte which doesn’t fit to the current ABNF definition (ALPHA/DIGIT) of “uuie” correlation mechanism • Proposal: a) fix ABNF accordingly, or b) specify that discriminator byte is not included in “uuie” parameter

  3. Next steps • Fix the open issues • Write Offer/Answer procedures for the whole draft • Currently O/A covers only negotiating the correlations mechanisms • Relase an updated version • WGLC before June?

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